.net 7 Web Api 无法读取 vps 部署上的 appsetting.json

Question

我正在将我的 Web api 部署到安装了 Ubuntu 23.04 的 VPS。我已经安装了 .net 7 sdk 和 nginx 等。但是当我尝试从任何 api 应用程序访问 api 来请求一些数据时，我收到此错误：

'连接 ID“0HMT9CF8GN50H”，请求 ID“0HMT9CF8GN50H:00000001”： 应用程序引发了未处理的异常。 SoriooWebApi[365268]：System.ArgumentNullException：值不能为 null。 （参数's'）'

实际上是 JWT Bearer 错误，这是 Program.cs:

    global using Microsoft.EntityFrameworkCore;
    using System.Text;
    using Microsoft.AspNetCore.Authentication.JwtBearer;
    using Microsoft.AspNetCore.Identity;
    using Microsoft.IdentityModel.Tokens;
    using Retyoo.Data;
    using Retyoo.Data.Auth;
    using Retyoo.Models;
    using Retyoo.WebApi.Data.Auth;
    using Retyoo.WebApi.Mappings;
    using Retyoo.WebApi.Helpers;
    using Retyoo.WebApi.Services;
    
    var builder = WebApplication.CreateBuilder(args);
    
    // Add services to the container.
    //Add DB
    
    builder.Services.AddControllers();
    builder.Services.AddHttpContextAccessor();
    
    
    builder.Services.AddEndpointsApiExplorer();
    builder.Services.AddSwaggerGen();
    
    // builder.Services.AddDbContext<AppDbContext>(options => {
    //     options.UseNpgsql(builder.Configuration.GetConnectionString("RetyooDatabase"), assembly => assembly.MigrationsAssembly(typeof(AppDbContext).Assembly.FullName));
    // });
    
    builder.Services.AddDbContext<AppDbContext>(options => {
        options.UseNpgsql(builder.Configuration.GetConnectionString("SoriooDB"), assembly => assembly.MigrationsAssembly(typeof(AppDbContext).Assembly.FullName));
    });
    
    //Email config
    builder.Services.Configure<EmailSettings>(builder.Configuration.GetSection("EmailConfiguration"));
    
    //Add Identity
    builder.Services.AddIdentity<ApplicationUser, IdentityRole>(options => {
        options.Tokens.EmailConfirmationTokenProvider = TokenOptions.DefaultEmailProvider;
        
    })
        .AddEntityFrameworkStores<AppDbContext>()
        .AddDefaultTokenProviders();
    
    //Config Identity
    builder.Services.Configure<IdentityOptions>(options => 
        {
            options.Password.RequiredLength = 6;
            options.Password.RequireDigit = false;
            options.Password.RequireNonAlphanumeric = false;
            options.Password.RequireLowercase = false;
            options.Password.RequireUppercase = false;
            options.SignIn.RequireConfirmedEmail = true;
            options.User.RequireUniqueEmail = true;
        }
    );
    
    //Add Authentication and JwtBearer
    builder.Services
        .AddAuthentication(options => {
            options.DefaultScheme = JwtBearerDefaults.AuthenticationScheme;
            options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
            options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
        })
        .AddJwtBearer(options => {
            options.SaveToken = true;
            options.RequireHttpsMetadata = false;
            options.TokenValidationParameters = new TokenValidationParameters()
            {
                ValidateIssuer = true,
                ValidateAudience = true,
                ValidIssuer = builder.Configuration["AppSettings:ValidIssuer"],
                ValidAudience = builder.Configuration["AppSettings:ValidAudience"],
                IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(builder.Configuration["AppSettings:Secret"]!)),
            };
        })
.AddGoogle(googleOptions => {
        googleOptions.ClientId = builder.Configuration["Authentication:GoogleWebClientId"]!;
        googleOptions.ClientSecret = builder.Configuration["Authentication:ClientSecret"]!;
            
        });
        
    
    builder.Services.AddAutoMapper(typeof(AutoMapperProfiles).Assembly);
    
    //Inject app Dependencies (DI)
    builder.Services.AddScoped<IAuthRepository, AuthRepository>();
    builder.Services.AddScoped<ITokenRepository, TokenRepository>();
    builder.Services.AddScoped<ICategoryService, CategoryService>();
    builder.Services.AddScoped<IImageService, ImageService>();
    builder.Services.AddScoped<ISellerService, SellerService>();
    builder.Services.AddScoped<ISellerCompanyService, SellerCompanyService>();
    
    builder.Services.AddTransient<IEmailService, EmailService>();
    
    //pipeline
    var app = builder.Build();
    
    
    if (app.Environment.IsDevelopment())
    {
        app.UseSwagger();
        app.UseSwaggerUI();
    } else {
        app.UseHttpsRedirection();
    }
    
    app.UseHttpsRedirection();
    app.UseAuthentication();
    app.UseAuthorization();
    
    app.MapControllers();
    
    app.Run();

这是appsettings.json 文件：

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  
  "AllowedHosts": "*",
  "ConnectionStrings": {
    "SoriooDB": "Host=localhost;Port=5432;Database=sorioodb;User Id=xxx;Password=xxx;"
  },
  "AppSettings": {
    "ValidIssuer": "http://localhost:5000",
    "ValidAudience": "http://localhost:3000",
    "Secret": "Asdad9DSADAOSDJADA=D)ASDAJADSALKSAD=ASKASDlkerjelkjadaşkAADKLJLK)=(098098ASDJKHkmKJHmnnbvv===",
    "RefreshTokenValidityInDays": 7
  },
  "EmailConfiguration": {
    "From": "xxx",
    "SmtpServer": "xxx",
    "Port": 587,
    "UserName": "xxx",
    "Password": "xxx"
  },
  "Authentication": {
    "GoogleWebClientId": "xxx",
    "GoogleAndroidClientId": "xxx",
    "GoogleIOSClientId": "xxx",
    "ClientSecret": "xxx"
  }
}

这是该服务的 systemd 文件：

[Unit]
Description=SoriooWebApi

[Service]
WorkingDirectory /home/app/SoriooWebApi
ExecStart=dotnet /home/app/SoriooWebApi/Retyoo.WebApi.dll
SyslogIdentifier=SoriooWebApi
User=ubuntu
Environment=ASPNETCORE_ENVIRONMENT=Production

[Install]
WantedBy=multi-user.target

当我在本地主机上发布 api 时，我没有错误，我也可以在发布的文件夹中看到 appsettings.json、appsettings.Production.json 文件。我实在找不到问题所在

Answer 1

那是我的错误，我已经研究了这个问题两天了，终于找到了问题所在。问题是在服务文件第 5 行（即“WorkingDirectory”）上添加“=”。我的发现是一个巧合，因为当我尝试使用“journalctl”命令检查服务状态时，出现了一条警告，指出第 5 行缺少“=”，但这是我的第 40 次检查，最后我看到了该消息。添加了“=”，现在它可以工作了...